fix: PDF généré côté serveur (pdf-lib) - 1 page A4 portrait garantie
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Manus
267
server/freeproPdfService.ts
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267
server/freeproPdfService.ts
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/**
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* Génération PDF Ventilation FreePro côté serveur avec pdf-lib.
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* Garantit 1 page A4 portrait quelle que soit la taille des données.
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*/
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import { PDFDocument, rgb, StandardFonts } from "pdf-lib";
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interface PdfLine {
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structure: string;
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type: string;
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montantCentimes: number;
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}
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interface PdfImportInfo {
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mois: string; // ex: "01/2025"
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refPiece: string;
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}
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function formatMontant(centimes: number): string {
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const euros = centimes / 100;
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const neg = euros < 0;
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const abs = Math.abs(euros);
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const str = abs.toFixed(2).replace(".", ",");
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const parts = str.split(",");
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parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, " ");
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return (neg ? "-" : "") + parts.join(",") + " EUR";
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}
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export async function generateFreeproPdf(
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info: PdfImportInfo,
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lines: PdfLine[]
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): Promise<Uint8Array> {
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const pdfDoc = await PDFDocument.create();
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const page = pdfDoc.addPage([595.28, 841.89]); // A4 portrait en points (72dpi)
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const helvetica = await pdfDoc.embedFont(StandardFonts.Helvetica);
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const helveticaBold = await pdfDoc.embedFont(StandardFonts.HelveticaBold);
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const { width, height } = page.getSize();
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const marginX = 40;
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const tableStartY = height - 90; // Y depuis le bas (pdf-lib: 0=bas)
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const tableEndY = 28;
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const usableW = width - marginX * 2;
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// Colonnes
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const col0W = usableW * 0.45;
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const col1W = usableW * 0.32;
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const col2W = usableW * 0.23;
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const col1X = marginX + col0W;
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const col2X = col1X + col1W;
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// Calcul hauteur de ligne
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const nbRows = lines.length + 2; // header + data + footer
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const availH = tableStartY - tableEndY;
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const rowH = availH / nbRows;
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const fontSize = Math.max(5, Math.min(9, rowH * 0.55));
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// ── En-tête du document ──────────────────────────────────────────────────
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const now = new Date();
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// Date édition (haut droite)
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page.drawText(
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`Edite le ${now.toLocaleDateString("fr-FR")} - ${now.toLocaleTimeString("fr-FR", { hour: "2-digit", minute: "2-digit" })}`,
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{
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x: width - marginX - 120,
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y: height - 20,
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size: 7,
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font: helvetica,
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color: rgb(0.4, 0.4, 0.4),
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}
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);
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// Titre
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const title = "Ventilation facture FREE PRO";
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const titleW = helveticaBold.widthOfTextAtSize(title, 14);
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page.drawText(title, {
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x: (width - titleW) / 2,
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y: height - 38,
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size: 14,
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font: helveticaBold,
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color: rgb(0, 0, 0),
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});
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// Mois
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const moisLabel = info.mois
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? (() => {
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const [mm, yyyy] = info.mois.split("/");
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const d = new Date(parseInt(yyyy), parseInt(mm) - 1, 1);
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return `${String(d.getMonth() + 1).padStart(2, "0")}/${d.getFullYear()}`;
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})()
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: info.mois;
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const moisW = helveticaBold.widthOfTextAtSize(moisLabel, 11);
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page.drawText(moisLabel, {
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x: (width - moisW) / 2,
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y: height - 56,
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size: 11,
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font: helveticaBold,
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color: rgb(0, 0, 0),
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});
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// Ref pièce
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page.drawText("ref_piece :", {
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x: marginX,
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y: height - 74,
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size: 8,
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font: helveticaBold,
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color: rgb(0, 0, 0),
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});
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page.drawText(info.refPiece || "", {
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x: marginX + 60,
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y: height - 74,
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size: 8,
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font: helvetica,
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color: rgb(0, 0, 0),
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});
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// ── Helpers de dessin ────────────────────────────────────────────────────
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const drawHLine = (yFromTop: number, lw: number, gray: number) => {
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const y = height - yFromTop;
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page.drawLine({
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start: { x: marginX, y },
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end: { x: marginX + usableW, y },
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thickness: lw,
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color: rgb(gray, gray, gray),
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});
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};
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const drawVLines = (yFromTop: number, h: number) => {
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const y = height - yFromTop;
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const xs = [marginX, col1X, col2X, marginX + usableW];
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for (const x of xs) {
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page.drawLine({
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start: { x, y },
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end: { x, y: y - h },
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thickness: 0.3,
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color: rgb(0.7, 0.7, 0.7),
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});
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}
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};
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const drawRowBg = (yFromTop: number, bgGray: number) => {
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page.drawRectangle({
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x: marginX,
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y: height - yFromTop - rowH,
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width: usableW,
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height: rowH,
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color: rgb(bgGray, bgGray, bgGray),
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});
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};
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const drawCell = (
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text: string,
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xLeft: number,
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xRight: number,
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yFromTop: number,
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bold: boolean,
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align: "left" | "right" = "left"
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) => {
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const font = bold ? helveticaBold : helvetica;
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const maxW = xRight - xLeft - 4;
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// Tronquer si trop long
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let t = text;
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while (t.length > 1 && font.widthOfTextAtSize(t, fontSize) > maxW) {
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t = t.slice(0, -1);
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}
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const tw = font.widthOfTextAtSize(t, fontSize);
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const x = align === "right" ? xRight - tw - 2 : xLeft + 2;
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const y = height - yFromTop - rowH * 0.65;
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page.drawText(t, { x, y, size: fontSize, font, color: rgb(0, 0, 0) });
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};
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// ── Header du tableau ────────────────────────────────────────────────────
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const headerYFromTop = height - tableStartY; // converti en "depuis le haut"
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// On travaille directement en coordonnées "depuis le haut" pour la logique
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// puis on convertit pour pdf-lib
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// Recalcul en coordonnées "depuis le haut de la page" pour la logique
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const tStartFromTop = height - tableStartY; // pixels depuis le haut = height - y_pdflib
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// En fait, simplifions : on calcule tout en "Y depuis le haut de la page"
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// et on convertit à la fin pour pdf-lib (y_pdflib = height - y_fromtop)
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// Redéfinir les helpers avec "yT" = Y depuis le haut
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const hLine = (yT: number, lw: number, gray: number) => {
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page.drawLine({
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start: { x: marginX, y: height - yT },
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end: { x: marginX + usableW, y: height - yT },
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thickness: lw,
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color: rgb(gray, gray, gray),
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});
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};
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const vLines = (yT: number, h: number) => {
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for (const x of [marginX, col1X, col2X, marginX + usableW]) {
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page.drawLine({
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start: { x, y: height - yT },
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end: { x, y: height - yT - h },
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thickness: 0.3,
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color: rgb(0.7, 0.7, 0.7),
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});
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}
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};
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const rowBg = (yT: number, gray: number) => {
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page.drawRectangle({
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x: marginX,
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y: height - yT - rowH,
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width: usableW,
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height: rowH,
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color: rgb(gray, gray, gray),
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});
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};
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const cell = (
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text: string,
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xL: number,
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xR: number,
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yT: number,
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bold: boolean,
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align: "left" | "right" = "left"
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) => {
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const font = bold ? helveticaBold : helvetica;
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const maxW = xR - xL - 4;
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let t = text;
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while (t.length > 1 && font.widthOfTextAtSize(t, fontSize) > maxW) {
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t = t.slice(0, -1);
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}
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const tw = font.widthOfTextAtSize(t, fontSize);
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const x = align === "right" ? xR - tw - 2 : xL + 2;
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const y = height - yT - rowH * 0.65;
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page.drawText(t, { x, y, size: fontSize, font, color: rgb(0, 0, 0) });
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};
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// Tableau commence à yT = 90 (depuis le haut)
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const tableTopYT = 90;
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// Header
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rowBg(tableTopYT, 0.88);
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hLine(tableTopYT, 0.5, 0);
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cell("Structure", marginX, col1X, tableTopYT, true);
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cell("Type", col1X, col2X, tableTopYT, true);
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cell("Montant TTC", col2X, marginX + usableW, tableTopYT, true, "right");
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hLine(tableTopYT + rowH, 0.5, 0);
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vLines(tableTopYT, rowH);
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// Lignes de données
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for (let i = 0; i < lines.length; i++) {
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const l = lines[i];
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const yT = tableTopYT + rowH * (i + 1);
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if (i % 2 === 1) rowBg(yT, 0.97);
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cell(l.structure || "", marginX, col1X, yT, false);
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cell(l.type || "", col1X, col2X, yT, false);
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cell(formatMontant(l.montantCentimes), col2X, marginX + usableW, yT, false, "right");
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hLine(yT + rowH, 0.2, 0.78);
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vLines(yT, rowH);
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}
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// Footer total
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const totalCentimes = lines.reduce((s, l) => s + l.montantCentimes, 0);
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const footerYT = tableTopYT + rowH * (lines.length + 1);
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rowBg(footerYT, 0.88);
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hLine(footerYT, 0.5, 0);
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cell("Total general", marginX, col1X, footerYT, true);
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cell(formatMontant(totalCentimes), col2X, marginX + usableW, footerYT, true, "right");
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hLine(footerYT + rowH, 0.5, 0);
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vLines(footerYT, rowH);
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return pdfDoc.save();
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}
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